Hello everyone, I had a quick question (well it might develop into a university level answer howerever :-). I'm sure everyone has heard of hardware/software interrupts such as Interrupt 10h being video card access, interrupt 21h being calls to OS services and the likes. How would one go about calling these interrupts? if it was possible to have a few examples, long or short, as a guide on the "how to" if calling system interrupts it would be greatly appreciated. Thank you all, Stephane Richard Software Developer -- Stephane Richard Software Developer [log in to unmask] Sent through GMX FreeMail - http://www.gmx.net